Physics MCQs with Answers

A. Diode B. Resistor C. Photodiode D. Capacitor

A. Semiconductors B. Insulators C. Conductors D. None of these

A. Decrease B. increase C. Remains same D. None of these

A. ΔL = αLΔT B. ΔL/LΔT C. LΔT/ΔL D. αLΔT-ΔL

A. 8500 – 9800 angstrom B. 7800 – 8000 angstrom C. 3900 – 7600 angstrom D. 1300 – 3000 angstrom

A. 6ge B. ge/6 C. 2ge D. Zero The correct answer is B.  ge/6, where is the acceleration due to gravity at the surface of the Earth. On the surface of the Moon, the acceleration due to gravity is approximately one-sixth (1/6) of the value of the Earth’s gravity, hence /6.

A. 60 db B. 80 db C. 100 db D. 120 db Additionally,  ‘db’ denotes ‘decibel’ and it is the unit of proportion.

A. Helium B. Cadmium C. Graphite D. Ordinary Water The function of a moderator in a nuclear reactor is to slow down neutrons so that they are more likely to cause further fission reactions. Among the options provided, C. Graphite is a good moderator. Graphite is commonly used in certain types of nuclear reactors, such … Read more

A. 1 meter B. 2 meter C. ½ meter D. ¼ meter The power of a lens (P) is defined as the reciprocal of its focal length (f) in meters, measured in diopters (D). So, if the power of the lens is one diopter, then its focal length is 1 meter.

A. Anti-electrons B. Anti-proton C. Anti-neutron D. All of these  The correct answer is D. All of these. Anti-matter is composed of antiparticles, which are counterparts to the particles of ordinary matter. Therefore, anti-matter includes anti-electrons (positrons), anti-protons, and anti-neutrons.